import turtle as t
import random
t.setup(1000,569)
t.bgpic('bg.gif')
color_list = ['black','orange','gold','forest green','skyblue']
wugui_list = []
for i in range(5):
    wugui = t.Pen()
    wugui.shape('turtle')
    wugui.color(color_list[i])
    wugui.shapesize(1.5)
    wugui.penup()
    wugui.goto(-430,160-80*i)
    wugui_list.append(wugui) # 把小乌龟放进列表里
flag = True # 是否要停下来
while flag:
    for i in range(5):
        wugui_list[i].forward(random.randint(5,10))
t.done()